function &process(&$submissionFile)
{
// Create the XML document
$doc = new DOMDocument('1.0');
$doc->preserveWhiteSpace = false;
$doc->formatOutput = true;
$deployment = $this->getDeployment();
$rootNode = $this->createSubmissionFileNode($doc, $submissionFile);
$doc->appendChild($rootNode);
$rootNode->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:xsi', 'http://www.w3.org/2001/XMLSchema-instance');
$rootNode->setAttribute('xsi:schemaLocation', $deployment->getNamespace() . ' ' . $deployment->getSchemaFilename());
return $doc;
}